Pneumatic pump for lifting granular materials.



n E. KoLTsGHANoFF. PNEUMATIG PUMP FOR LIFTING GRANIILAR MATERIALS.

APPLICATION FILED 00T. 29, 1910.

Patented Jan. 30, 1912.

l 1 STATES PATinSrr OFFICE.- i

nMILIAN,KoLTscHANoFF, or TAGANROG, 'aUSsIA, ASSIGNoR To socIrsrAnLLo:

. of the FRRES, nf. KoLTS'oHANoFF &

rn'EUM'a'rIo PUMP ron LIFTING GRANULAR MATERIALS.

l spoiaction of Letters Patent.

U. DIAMANTID1, or TAGANROG, RUSSIA.

Patented J an. 30, 1912.

Application leid 0ctober'29, 1910. Serial No." 589,765.

To all lwhom it may'concem Be it known that I, EMILIAN KoLTsoHA- Norr, a subject of' the' Czarof Russia, and residing at Taganrog, in the Empire of Russia, have invented certain new and useful Improvements in Pneumatic IPumps for LiftingGranular Materials, of .which the followiugis a specification.

This invention consists in a rotary pneumatic pump vfor lifting granular' materials (hereinafter ,referred as grain) in which a currentofair sucked in by the 'pump carries t-he grain in-'to the pump, Where it fillsthe suction space, from which the grain is conveyed by moving abutments of the pump to the pump out-let:

The improved'pump resembles a 'cert-ain type of existing rotary pumps inasmuch as 1t comprises la rotary drum arranged in a casing and provided with movable abutments which are caused to slide` radially in and out of the drum by the action of camgrooves or camraces lformed in the side plates or covers of thepump casing: In the improved'pump, an air-inlet valve 1s provided a short distance in front of the pump. outlet, and is arranged to be opened on the passage of one of the abutments for the purpose of admitting air for destroying the vacuum formed in the suction space, and t-hereby increasing the eiciency of the PUIUP-V i An addltional air suction side of the being adjusted so Pump- A. constructlonal form of pump for the purpose of as to regulate the output drawings, in whic lgure 1v is .a section of the improved pum taken in the plane of the rotary drum, and- 1g. 2 1s an axial sectlon thereof taken" at. right angles to Fig.- 1.

1 is a cylindrical casing with side-plates or covers`2 provided with suitable bearings- 3 carrying a drivingshaft 4 on which a 5 is xed having tworadial slotsf situated diametrica'lly opposite to eachother f in whichyabutments 1n and out.

..8 arepinsin the inner ends of the abutments 7, projecting at each end beyond the ,7 are arranged to slide corresponding fiat side ofthe drum-5. 9A

' so shaped that as the bolted to the cylindrical casing inlet is provided -on the i are antifriction rollers mounted on the projecting ends ofthe in 8 and-held thereon by nuts; they are a apted to runA in a camgroove'lO formed in t-he side covers 2 and rotation of the driving shaft 4, the abutments 7- willeach be reciprocated so as to make one complete out-and in-stroke during each yrotation of the drum.

11 is the inlet, and 12 is thejoutlet of the pump.

The bearings 3 for the shaft 4 are preferably constructed as roller bearings compris# ing rollers 13 resting in the side-covers2 and held in place by collars -15 on the shaft 4.. These rollers areadjust- `ed by means of adjusting rings 16 actln upon the rollers through the medium 0 wedges 17.

The rotary drum 5 the casing 1 as to leave between it and the latter an annular space 18 in whicha parti:-

-t1on 19, thatis arranged 4between the inlet 11 and outlet l2, extends from the inside of`v the casing 1 to the periphery of the drum his partition 19 that is preferably provided with a suitable jointing device at its contact surface with the drum 5, is preferablylixedvto a removablecover'QO which 1s 21 are jointing rings provided for tlie purpose of closing the annular space 18 alrtight; they are `preferably made conical on the side facing the drum 5, and they bear against correspondingly shaped faces on the drum. 22 are springs for pressing Vthe jointl ing rings 2 1 against the drum .so as to maintain always' a uniform jolntmg pressure.

4 An inwardly opening check valve is pro-- videddiametrically .opposite to the Inlet 11 'and near` the outlet 12. This valve 1s held closed bytheair pressure in front of the lowergabutment 7; but' as soon as the abut-4 drum 1s rotated, bythe "Y" is so arranged insideside brackets 14 of ment 7 passes to the osition shown in Fig.

"1, the partial vacuum `ehind the lower abut# ment 7 permits the opening of the valves by the pressure of the-outside air.

24 is an air-inlet cock provided on the other side of thecasing 1'. It is adapted to be opened and closed'by hand by means. of a Youtput vof the ump.

'105 -handle 25 for the purpose of regulating the A.

When the a utments7- are in the position;

, to the concentric -tion iis produced on 'outlet 12, so

'a6-min rig. i ai ne num 5 is fearing in the direction indicated by the arrow, sucthe Aright hand side ot the pump above the partition 19, which acts upon the inlet 1l and nected thereto, sothat air is sucked in which carries the grain along and delivers it into thesuction space of the pump. l

The outer edge of the upper abutment 7 Areinajns in contact with the inside wall of the cylindricalcasin '1 during the entire f downward travel of the said abutment owing form of the corresponding part of the cam'fgroove 10, so that during this entire period, air and grain are sucked in', to fill the ing extent. 'The suction space is closed as soon as moved upward, and therefore in order that the eciency of the pump shall not be reduced, itis `advisable to destroy vthe vacuum `as aforesaid. In this manner there is very little or no dierence between the pressure in the suction space' (that is, the lett hand cavity in Fig. 1) and the pressure at the that the grain is not only able to pass without hindrance out oi the outlet 12, but is pushed by the compression-action of the abutment on the grain and air mixture in the suction space 18 with considerable force through the outlet 12 and through the lifting pipe connected therewith.

its soon as the lower abutment 7 in its upward movement reaches the outlet 12, it is moved radially inward owing to the peculiar shape ot the cam-groove 10 at the corresponding point, until the outer edge ot the said abutment becomes dush with the periphery ot the drum 5, so that it is enabled to pass freely past the partition 19. As soon as 1t has passed this partition, ment is moved outward again until in its upper position shown in Fig. 1, it comes in contact again with the periphery ot the cylindrical casing 1.

For the purpose ot avoiding a crushing or cutting of theindowing grain against the edges ci the inlet 11, a butler 26, for instance ot rubber, carrying an elastic plate 27, may be provided as shown.

Practical use has shown that the improved pneumatic pump hasa veryhigh output in lifting grain, and is much superior to existmpneumatic elevating apparatus.

avmgV now particularly described and ascertained'the nature ci my invention and in what manner the same is to be performed, l declare that what l claim is u 1.. 1n aY neumatic pump 'tor lifting grain and-the like, the combination of a rotary pump provided with.V a suction-pipe and an outlet-pipe, the former for sucking the grain with the airinto the space between vanes of' the supply pipe con-y provlded with' radial lments forming a space between 'vanes tor suctionspace to a correspondthe lower abutment in Fig. l has.

admitting air into the suction space, Ywhich is done bythe opening of the valve 23 the said abut-- `casing being provided also with weer the pump, and the latter for delivering the rain by the compression-action of the pump into the delivery pipe, and an air-inlet valve A in the space between vanes of the ump.

2. ln a-pneum'atic pump forli ting grain and the like, 'the combination ofy a casing provided with ai"suction-inlet' and a dischar e-outlet, a rotating drum in said, casing reciprocating abutdrawing in the grain with the air, and 1nwardly-opening' air-valve near the outlet for admitting air mto the space between vanes on the passage of each 'abutment past the valve.

' 3. ln a neumatic pump for lifting grain and the like, the combination of a rotary ump comprising a casing having a suctioninlet and a discharge-outlet, a drum with radially sliding abutments and a ixed partition in said casing between said inlet and (outlet openings and a regulable air-inlet valve between the inlet and the partition.

'4. 1n a pneumatic pump for lifting grain and the like, the combination of a cylindrical casing, provided with inlet and outlety openings less than 180 apart, a rotary drum `in said oasmg and of a 'smaller diameter than the casing and provided with diametrically opposite radially disposed slots, abptments radially slidable in said slots, a partition secured to said casing between the inlet and outlet openings and substantially con- ,a

tactingthe drum, and means Vfor reciprocating the abutments, said casing being pro-V vided with a valve-opening substantially diametrically opposite 4to said inlet opening and an inwardly openingA check valve in the valve-opening.

5. ln a pneumatic pump for lifting grain and the like, the combination of a cylindrical casing, provided with inlet and outlet openings less than 180 apart, a rotary drum in said casing and ot a smaller diameter than the casing and rovided with diametrically opposite radia ly disposed slots, abutments radially slidable in said slots, a partition secured to said casing and outlet openings .and substantially contacting the drum, and means for reciprocating the abutments, said casing beingV provided with a valved opening. between the partition and the inlet opening and having a manually operated valve-cock therein, said a 'valveopening diametrically opposite to inlet o ing and having an inwardly opening c valve therein.

y6. ln a pneumatic ump 'for lifting grain and the like, the combination of a cylindrical casing having cam-ways in the ends thereof and an inlet and an outlet, a shaft journaled in the casing, a drum of smaller diameter than the casing and having two radial, diametrally-opposlte ,slots secured eck between the inlet i the shaft inside of the casing to the vfrom the inside of the and an abutment attached tol each on the shaft, apartition in the casing between said inlet and outlet and extending casing to the drum, a pin in each slot guided in said cam-ways, pin, parts of said cam-ways being concentricwith the casing for more than half thecircumference thereof and the remaining parts of said cam-Ways nearest said partition .being within the circle obtained by continuing the former parts concentrically; and an air inlet valve on the side of thev casing opposite the partition, between the inlet and outlet 'openings and near the latter.- p

In a pneumatic pump for lifting grain and the like, the combination of a cylindrical casing having cam-ways in the ends thereof and an inlet and an outlet, a shaft journaled in the iameter than the casing and having'two radial, diametrally-opposite slots secured on a partition in the said inlet and outlet and extending from the and the remaining parts of saidcam-ways nearest said partition being` within the circle obtainedA by continuing the former parts the shaft, a

caslng, a drum of smaller casing between` drum, a pin in each slot guided' in said cam-ways, an abut,-A

' as my invention,

andan air inlet valve on the casing between the inlet and the artition.-

8. In a pneumatic pump for li ing grain and the like, the combination of a cylindrical casing having cam-ways in the 'ends thereof and -an inlet and an outlet, a shaft journaled in the casing, a drum of' smaller Idiameter than the casing and having two radial, 'diametrally-opposite slots secured on partition in the said inlet and outlet and extending from the inside, of the casing tothe drum, a pin in each slot guidedin said Cam-ways, an abutment attached to each pin, partsof said cam-ways being concentric with the casing for more than half thecircumference thereof and the remaining parts of said cam-ways nearest said partition being within the circle obtained by continuing the former parts cocentrically, on the side of t oncentrically,

the casing between the inlet and the partition, and anair^out1et valve on i i the other side of the casing near the inlet. In testimon that I claimthe/foregoing I have signed my name 1n presence of two subscribing witnesses. v

EMILIANKOLTSQHANOFF.

' .Witnesses:

REINHARDT MLLER, G. ST. CLAIR FARAnLI.

casing between a regulatable air inlet valve, 

